Abstract
The effect of drought on the seedlings was evaluated by testing the variance of physiological and biochemical parameters and this experiment were conducted using treatments of different polyethylene glycol(PEG-6000) concentrations(mild stress,moderate stress,severe stress) and different stress durations(24,48,72 h).The results indicated that the relative water content in leaves showed a decreased tendency with the increase of stress intensity and the treating time,and the control treatment was significant lower than other treatments(P0.05).The relative conductivity tended to increase and every treatment showed significant difference when treated with 48 h and 72h(P0.05);the proline and MDA content tended to increase and their highest values were attained under severe stress treatment;the highest activities of SOD,POD,PPO were attained when treated 24h,mild stress,severe stress,respectively.The index of relative conductivity,MDA content and soluble sugar were intuitive and as proper physiological indices for evaluating drought resistance of seedlings of salak.
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Claims 9
Claim · model-written summary
Leaf relative water content tended to decrease with PEG stress intensity and time.
Verbatim
e0“the relative water content in leaves showed a decreased tendency with the increase of stress intensity and the treating time”
t0“Salak [Salacca zalacca(Gaertner) Voss]”
Claim · model-written summary
Control leaf relative water content was significantly lower than under other treatments.
Verbatim
e0“the control treatment was significant lower than other treatments(P0.05)”
e1“relative water content in leaves”
t0“Salak [Salacca zalacca(Gaertner) Voss]”
Claim · model-written summary
Relative conductivity tended to increase, with significant differences after 48 and 72 h.
Verbatim
e0“The relative conductivity tended to increase and every treatment showed significant difference when treated with 48 h and 72h(P0.05)”
t0“Salak [Salacca zalacca(Gaertner) Voss]”
Claim · model-written summary
Proline content tended to increase and reached its highest value under severe stress.
Verbatim
e0“the proline and MDA content tended to increase and their highest values were attained under severe stress treatment”
t0“Salak [Salacca zalacca(Gaertner) Voss]”
Claim · model-written summary
MDA content tended to increase and reached its highest value under severe stress.
Verbatim
e0“the proline and MDA content tended to increase and their highest values were attained under severe stress treatment”
t0“Salak [Salacca zalacca(Gaertner) Voss]”
Claim · model-written summary
SOD activity was highest after 24 h.
Verbatim
e0“the highest activities of SOD,POD,PPO were attained when treated 24h,mild stress,severe stress,respectively”
t0“Salak [Salacca zalacca(Gaertner) Voss]”
Claim · model-written summary
POD activity was highest under mild stress.
Verbatim
e0“the highest activities of SOD,POD,PPO were attained when treated 24h,mild stress,severe stress,respectively”
t0“Salak [Salacca zalacca(Gaertner) Voss]”
Claim · model-written summary
PPO activity was highest under severe stress.
Verbatim
e0“the highest activities of SOD,POD,PPO were attained when treated 24h,mild stress,severe stress,respectively”
t0“Salak [Salacca zalacca(Gaertner) Voss]”
Claim · model-written summary
Relative conductivity, MDA content, and soluble sugar were judged suitable indices of seedling drought resistance.
- Taxon
- salake0
- Outcome
- proper physiological indices for evaluating drought resistancee0
- Qualifier
- relative conductivity,MDA content and soluble sugare0
Not reportedComparatorValue
Verbatim
e0“The index of relative conductivity,MDA content and soluble sugar were intuitive and as proper physiological indices for evaluating drought resistance of seedlings of salak”